ref: 7f224a8f6d343cf0aaf162cc9b9f7d4d62ac78ac
dir: /sys/src/ape/lib/ap/plan9/lib.h/
#include <sys/types.h>
#include <sys/limits.h>
#include <fcntl.h>
#include <ureg.h>
typedef struct Ureg Ureg;
/* mux buf for selecting (see _buf.c) */
enum {
READMAX = 8192, /* read at most this much with _READ */
PERFDMAX = 2*READMAX, /* stop _READing an fd when it has this much */
INITBUFS = 4, /* allow enough room for this many PERFDMAX */
};
typedef struct Muxbuf {
int n; /* # unprocessed chars in buf */
unsigned char* putnext; /* place for copy process to put next data */
unsigned char* getnext; /* place for parent process to get next data */
char fd; /* fd for which this is a buffer */
unsigned char eof; /* true if eof after current data exhausted */
unsigned char roomwait; /* true if copy process is waiting for room */
unsigned char datawait; /* true if parent process is waiting for data */
int copypid; /* pid of copyproc */
unsigned char data[PERFDMAX];
} Muxbuf;
/* be sure to change _fdinfo[] init in _fdinfo if you change this */
typedef struct Fdinfo{
unsigned long flags;
unsigned long oflags;
uid_t uid;
gid_t gid;
char *name;
/*
* the following is used if flags&FD_BUFFERED
*/
Muxbuf *buf; /* holds buffered data and state */
} Fdinfo;
/* #define FD_CLOEXEC 1 is in fcntl.h */
#define FD_ISOPEN 0x2
#define FD_BUFFERED 0x4
#define FD_BUFFEREDX 0x8
#define FD_ISTTY 0x20
#define MAXSIG SIGUSR2
extern Fdinfo _fdinfo[];
extern int _finishing;
extern int _sessleader;
extern void (*_sighdlr[])(int, char*, Ureg*);
extern char *_sigstring(int);
extern int _stringsig(char *);
extern long _psigblocked;
extern int _startbuf(int);
extern int _selbuf(int);
extern void _closebuf(int);
extern int _readbuf(int, void*, int, int);
extern void _detachbuf(void);
extern void _finish(int, char *);
extern char *_ultoa(char *, unsigned long);
extern int _notehandler(void *, char *);
extern void _notetramp(int, void (*)(int, char*, Ureg*), Ureg*);
extern void _syserrno(void);
extern int _getpw(int *, char **, char **);
extern int _isatty(int);
extern void _fdinit(char*, char*);
void checkbug(char *, int);